kcachegrind | 易学教程

View gprof output in kcachegrind

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问题 How to view output of gprof in kcachegrind? Is here a converter from gcc's gmon.out into callgrind.out? 回答1: Currently, this seems not to be supported. It is mentioned on Kcachegrind's whishlist, though. 来源： https://stackoverflow.com/questions/7274095/view-gprof-output-in-kcachegrind

KCachegrind output for optimized vs unoptimized builds

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问题 I run valgrind --tool=callgrind ./executable on the executable file generated by the following code: #include <cstdlib> #include <stdio.h> using namespace std; class XYZ{ public: int Count() const {return count;} void Count(int val){count = val;} private: int count; }; int main() { XYZ xyz; xyz.Count(10000); int sum = 0; for(int i = 0; i < xyz.Count(); i++){ //My interest is to see how the compiler optimizes the xyz.Count() call sum += i; } printf("Sum is %d\n", sum); return 0; } I make a

qcachegrind “flat profile” dock panel disappeared. how to restore?

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问题 I installed qcachegrind on OS X via brew. No problems. I generated a few *.callgrind files and viewed them with qcachegrind. Again, no problem. While viewing one file I accidentally closed the "flat profile" dock panel. Now anytime I open qcachegrind that panel is missing. I tried running lsof to figure out where qcachegrind was getting its preferences, but that didn't help. I deleted a file from ~/Library/Preferences/io.github.qcachegrind.plist that appeared to store window position data,

How do I get back to the beginning in kcachegrind?

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问题 Sometimes I run kcachegrind, click around awhile, hit the little 'x' that closes the left panel (oops! no idea how to get it back), click around some more, get totally lost, then exit kcachegrind. Then I later re-run kcachegrind again on the same input file, hoping to start afresh, but instead, kcachegrind "helpfully" remembers the broken state I was in and puts me back there, i.e. totally lost and with a missing panel that I have no idea how to get back. How do I recover? Hitting Up,Up,Up...

How do I get back to the beginning in kcachegrind?

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Error summary in Valgrind output?

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问题 I have seen some of the post regarding valgrind but not single post helped me in understanding interpretation of valgrind output. I ran two programs with valgrind (Both having memory leaks) Sample Output for Test 1 ==20422== LEAK SUMMARY: ==20422== definitely lost: 448 bytes in 3 blocks ==20422== indirectly lost: 786,460 bytes in 1 blocks ==20422== possibly lost: 1,576,052 bytes in 46 blocks ==20422== still reachable: 1,077,107 bytes in 2,333 blocks ==20422== suppressed: 0 bytes in 0 blocks =

Make callgrind show all function calls in the kcachegrind callgraph

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问题 I was using valgrind tool - callgrind and kcachegrind for profiling a large project and was wondering if there is a way that callgrind reports the stats from all the functions (not just the most expensive functions). To be specific - When I visualized the callgraph in kcachegrind, it included only those functions that are quite expensive, but I was wondering if there is a way to include all the functions from the project in the callgraph. Command used for generating profiling info is given

Confused about profiling result

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问题 I have built my program with " -g -O2 " and ran valgrind +cachegrind. I am unsure how to interpret the output. Here is the output: http://daviddoria.com/Uploads/callgrind.CacheMisses My "whole program" is the InpaintingAlgorithm function that is 98.4% of "main". So far so good. Now looking at the callees of InpaintingAlgorithm , 92.9% of InpaintingAlgorithm is LinearSearchKNNProperty::operator() . This is my "inner loop", and again I expect a huge amount of the time to be spent here. Now here

PHP parser for cachegrind files?

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问题 Is there such a thing? I'm on windows and using the WinCacheGrind app and it doesn't seem to work with large files (~2 MB). I get errors like "cannot find call target". Do you know any parser for such files written in PHP that can help me build my own cachegrind analyzer? 回答1: i am not sure if that is possible in PHP, but can try http://sourceforge.net/projects/precompiledbin/, if you just want to read cachegrind files, KCacheGrind actually works on linux but someone has ported it to run on

Error summary in Valgrind output?

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I have seen some of the post regarding valgrind but not single post helped me in understanding interpretation of valgrind output. I ran two programs with valgrind (Both having memory leaks) Sample Output for Test 1 ==20422== LEAK SUMMARY: ==20422== definitely lost: 448 bytes in 3 blocks ==20422== indirectly lost: 786,460 bytes in 1 blocks ==20422== possibly lost: 1,576,052 bytes in 46 blocks ==20422== still reachable: 1,077,107 bytes in 2,333 blocks ==20422== suppressed: 0 bytes in 0 blocks ==20422== Rerun with --leak-check=full to see details of leaked memory ==20422== ==20422== For counts of